7.3 Proportional Reasoning - Practical Applications

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs.  Write and solve a proportion to find the number c of cats.

• c=15
• c=18
• c=21
• c=16

Tags

CCSS.6.EE.B.6

CCSS.6.EE.B.7

CCSS.6.RP.A.1

CCSS.6.RP.A.3

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk
• 1.75 cups milk
• 2 cups flour
• 2.25 cups milk

Tags

CCSS.7.RP.A.2A

A tree is 12 feet tall and casts a shadow 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? (Draw a picture, set up a proportion)

• 24 feet
• 21 feet
• 27 feet
• 32 feet

Tags

CCSS.HSG.SRT.C.8

On vacation, Juan drove 275 miles in 5 hours. Predict how far Juan will travel at the same rate in the next 3 hours.

• 440
• 195
• 165
• 55

Tags

CCSS.6.RP.A.2

CCSS.6.RP.A.3

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs.  Write and solve a proportion to find the number c of cats.

• c=15
• c=18
• c=21
• c=16

The ratio of blue marbles to white marbles in Simran's bag is equal to 1 to 2. If there are 20 blue marbles, how many white marbles are there?

• 10
• 20
• 40
• 60

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

The ratio of green houses to white houses on Winthrop Street is equal to 2 to 3. There are 60 white houses on Winthrop Street. How many green houses are there?

• 20
• 30
• 40
• 60

A museum hosts school field trips. They require the school to send 3 adults for every 21 children who go on the trip. If a school sends 15 adults on the field trip, how many students can go on the trip?

• 77
• 91
• 98
• 105

For every $750 in sales a local company donates $15 to an animal shelter. In the first quarter, the company donated $225 to the animal shelter. What was the amount of sales in the first quarter?

• 7,500
• 10,500
• 11,250
• 15,000

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

On a map, Putrajaya is 5 cm from Puchong. If the map's scale is 1 cm = 3 miles, what is the actual distance from Putrajaya to Puchong?

• 15
• 5
• 10
• 14

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3